Hi everyone. I'm in some deep trouble at the moment, because I've lost about 4 gb of data. I'm using a Toshiba 4 gb CompactFlash card on my canon 5d and a Trust multi card reader to read it. After i put the CF card in the cardreader and it didn't read i tried putting it back in the camera and use the slow method with the camera cable. The 5d told me the card wasn't formatted and i couldn't see any data! I made pictures on it just minutes ago :S
Anyone who could help me solve this situation I would be much obliged.

[edit]
i just noted that one of the pins in my cardreader was bent. Could this be the problem? and if so, will my data be retrievable?

The bent pin issue: unless its severly bent, it shouldnt really affect operation as it will still make contact with the contacts of the card. If you have some tweezers, _Gently_ tease the pin straight.

Have you tried the card and or card reader on a different pc? Just to rule out theres been no conflicts made on your pc. If it works fine on another computer, try a system restore on your pc and try again.

I'd start there and see how you go...

Have you done anything that comes to mind that may affect the CF card from reading?

Hmm, if it doesn't read in the card-reader and the camera I fear you're in for some serious trouble Have you looked whether some pin in your camera is also bent?
Because first of all you need a working electrical connection. As Phil suggested, try it with another reader.
If you google "sandisk cf recovery" some companies show up offering recovery software (often with free trials). You may try one of those.

thanks thomas, I'll try that.
Luckily my camera works fine at the moment with other CF-cards, so it's only this disk that's in trouble. I'll just buy a big cf card and use usb cable connection for now...